It would take Mexico's Carlos
Slim, the world's richest man, even longer at 220 years. Warren
Buffett could get through his fortune slightly faster, but it
would still take 169 years to clear his bank
account.

While few could keep up with
these hypothetical spending patterns, more people than ever can
call themselves billionaires these days. In fact, the number of
billionaires in the world has more than doubled since the
recession, rising from 793 in March 2009 to 1,645 in March 2014,
Oxfam reports.

And wealth proves to be the
gift that keeps on giving — billionaires average a 5.3% return on
wealth, compared to the 1.95% return rate for the ordinary
person. This means Gates makes an approximate $11.5 million a day
from interest.

When comparing this extreme
wealth to those on the other side of the economic spectrum,
however, the report found some startling inequalities. Namely,
the 85 richest people in the world have a combined net worth
equal to the poorest half of the entire global
population.